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06/05/2005 01:03:11 AM · #1 |
| I am having an intermitten problem with my Speedlite 420EX on my Cannon Digital Rebel. I got the camera about 2 weeks ago(used, not new), and when I first got it everything worked fine. About 4 days after I got it(and some 800 shots later) I started having a problem where the pictures come out severly underexposed when using the speedlite. Most of them are pretty much black, unless I point it at a light, and is seems to me that the Speedlite goes off before the shutter clicks. I have done a few things to troubleshoot this. The first thing i did was I cleaned my contacts on the hotshoe, nothing. I then Changed the batteries, nothing. The next day, while at work, I took my camera with me to snap a picure that caught my eye in my travels. After sitting in the car all day, I decided to mount the flash back on the camera, and it worked! I put the camera away, and the next day, went to shoot some pictures of my girlfriend, and sure enough the problem came back. If I use the on-board flash, everything works fine, however I prefer the quality of the better flash. I went to my local camera shop and they gave me a speedlite 580ex to try on the camera. I mounted it there in the shop, and sure evough it worked beatufully. I bought it drove 20 min's away to my sisters graduation, and sure enough even with the 580ex, the same problem came back. I feel that I have narrowed it down to something with the camera. The is bothering me VERY much, and any help would be greatly appreciated. |
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06/05/2005 01:05:51 AM · #2 |
Two things to check....
Make sure your hot shoe mount guide rails aren't bent. See if the problem is when you use the camera vertically or horizontally or both.
Make sure you aren't covering the flash sensor with your hand or something when you fire it. The flash needs to be able to read the pre-flash for the exposure evaluation.
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06/05/2005 01:18:44 AM · #3 |
jmsetzler,
thanks for your quick response. The guide rails are not bent, and I just tried shooting the camera both vertically and horizontally. I shot one shot at the normal position, then turned it 90 degrees, shot again, and continued to do this until it was back to normal. Still not working. |
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06/05/2005 01:20:07 AM · #4 |
Have you all settigs correct ISO etc on camera and flash?
are your flash settings correct?
Try using manual mode and see if it will sync at different shutter speeds.
There may be a problem internally that could be checked out by a canon repair shop.
Message edited by author 2005-06-05 01:21:07. |
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06/05/2005 01:20:56 AM · #5 |
So the flash doesn't fire properly in either orientation? If it's a random failure in both orientations, your camera probably needs to go in for service. There is a bad connection somewhere inside.
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06/05/2005 01:22:29 AM · #6 |
| That is what I was afraid of :( In either full auto, or manual, i get the same results |
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06/05/2005 01:28:31 AM · #7 |
Originally posted by jmsetzler:
Make sure you aren't covering the flash sensor with your hand or something when you fire it. The flash needs to be able to read the pre-flash for the exposure evaluation. |
BTW, It's a TTL flash... ie: no sensor on the flash for exposure, it's done by the camera.
Cheers, Me.
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06/05/2005 07:55:54 AM · #8 |
Are you sure you're not in Manual mode on the camera and setting the shutter speed too fast? Of course, that won't produce inconsistent exposures; it'll just cause completely underexposed shots the whole time. What mode are you in and what's the shutter speed in the EXIF data?
I don't remember if the 420 has a high speed mode or not. Anyone?
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